यदि $\sum_{r=1}^{n}(2r-1) = x$ है,तो $\lim_{n}$ ${\rightarrow \infty} \left[ \frac{1^3}{x^2} + \frac{2^3}{x^2} + \frac{3^3}{x^2} + \ldots + \frac{n^3}{x^2} \right]$ का मान ज्ञात कीजिए।

  • A
    $\frac{1}{4}$
  • B
    $4$
  • C
    $\frac{1}{2}$
  • D
    $1$

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